School-desk



(No Model.)

M. B. GARBER & J. W. MOELVAIN.

SCHOOL DESK. No. 367,512. Patented Aug. 2,1887.

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MICHAEL B. GARBER, OF SPRINGFIELD, AND JAMES w. MOELVAIN, or

AUBURN, ILLINOIS.

SCHOOL-DESK.

SPECIFICATION forming part of Letters Patent No. 367,512, dated August 2, 1887.

Application filed October 14, 1856. Serial No. QULQQD. (No model.)

T 0 all whom it may concern:

Be it known that we, MIOHAEL B. GAR'BER and J AMES W. MoELVAIN, citizens of the United States, residing at Springfield and Auburn, respectively, in the county of Sangamon and State of Illinois, have invented a new and useful Improvement in School'Dcsks, of which the following is a specification.

Our invention relates to school-desks used by young and middle-agedpupils in common, private,and public schools.

The object of our invention is to raise and lower the seat and'top of a schooldesk by means of a device or an attachment to adjust them to pupils of all ages and size. "We attain this object by an apparatus illustrated in the accompanying drawings, in which Figure 1 is an end elevation of a desk,showiug the manner in which the attachment is made. Fig. 2 is an enlarged view of the seat attachment, showing the way in which it is constructed and used. Fig.3 is asmall leverrod with which the seat or top is raised and lowered.

The desk-standards are cast, as shown in Fig. 1, with ratchetnotches at O O. The seat and top are held in place at any heightset, by means of the apparatus more clearly illustrated in Fig. 2. The ratchet A, hinged to the solid pivot E, swings so as to fit into the notches O,whilc the grooved shoulders orlugs B 13, sliding in the opening 0 of thecast standard, hold the attachment rigidly in place at any point. The strong steel spring S, set between the solid posts F F, acts against the lower end of the ratchet A and holds it firmly into the notches 0, thus preventing any looseness or movement of the attachment while in use. The thin plate G fits over the posts F F, and is held in place by nuts turned ontheir ends to keep the spring fromslipping out.

Fig. 2 shows the casting D,to which the seat.

is hinged, andthe above-described apparatus is attached to it. The apparatus for raising and lowering the desk-top is constructed in exactly the same manner and is attached to the casting of the desktop.

The seat ortop is raised or lowered by means of the small lever-rod represented by Fig. 3. The end J is taken in the hand and the bent end K is set in the notch H of the ratchet A. The lever-arm is brought against the small post I, and the ratchet A is swung forward, bending the spring S,and throwing the catches out of the notches G, the seat or top may be.

raised or lowered with ease.

\Ve are aware that prior to our invention vertically-adjustable school-desks have been made and patents granted therefor. We therefore do not claim this feature, broadly; but

IVhat we do claim ashew and useful, and desire to secure by Letters Patcnt,is.

In a school desk, the combination of the cast standards with the openings 0 O and the notches G O, the pawl A, the grooved lugs B B, and the spring S,with plate G, for adjusting the seat and top vertically, substantially as described,'and for the purposes set forth.

In testimony whereof we set our hands in the presence of two witnesses.

MICHAEL E. GARBEB. J AMES \V. MCELVAIN.

Witnesses:

B. F. TALBOTT, D. RUNYON. 

